Carlton Adler
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| Current is | |||||
| liberated as heat | |||||
| inhibit movement of electrical charge | |||||
| If the distance between two electrical charges is doubled, the force between them is | |||||
| Resistance is | the opposition to the flow of electrons | ||||
| If a conductor is positively charged | is deficient in electrons | ||||
| The mA is a unit of | current | ||||
| A magnetic field is produced by | electric charges in motion | ||||
| A diode electron tube | can be used for rectification | ||||
| The process of electrons being emitted from heated metallic surfaces is called | thermionic emission | ||||
| A generator is a device that converts | mechanical energy into electrical | ||||
| A simple DC generator has essentially the same construction as an AC generator except that a DC generator has | a commutator | ||||
| A rectifier | converts AC to DC | ||||
| A motor is a device that converts | heat energy into electrical energy | ||||
| A bar magnet and a wire loop move with the same linear velocity. What is the voltage induced in the wire? | zero | ||||
| Conventional current flows | from anode to cathode | ||||
| Where is the stator of the anode induction motor located | outside the glass envelope and outside the rotor | ||||
| The exposure shift on an x ray machine is intended to | both initiate and terminate the exposure | ||||
| The exposure switch is found between the | autotransformer and the timer circuit | ||||
| All of the following are radiographer-operated controls except | generator selection | ||||
| The advantage of a curved top radiograph table is the | smaller object image distance | ||||
| The Bucky tray consist of | a moving 17X17 grid | ||||
| Backup time | cannot exceed the tube limit and should not be set at 150 percent of expected manual mAs | ||||
| Radiographic rooms equipped with a tilting table are primarily designed for performing __ procedures | diagnostic and fluroscopic | ||||
| The height of the average radiographic tabletop to the floor is __ inches | 40 | ||||
| Tube suspension systems include which of the following | overhead tube suspension, mobile tube suspension system and c arm tube suspension | ||||
| Which tube suspension system offers the greatest multidirectional movement? | overhead tube suspension | ||||
| Nearly all x ray equipment operate from an incoming line of | 210v | ||||
| When full wave rectification is applied to three phase current, a __ ripple is produced | voltage | ||||
| Ancillary equipment for tilting tables includes | a footboard, handgrips, and shoulder supports | ||||
| The diagnostic x ray range is qpproximately | 10 to 1,200 mA, 0.001 - 10 seconds, and 25 to 150 kVp | ||||
| The incoming line current is supplied | to approximately 60 volts | ||||
| An indicated current in a wire loop | can result only from an alternately expanding and contracting magnetic field | ||||
| A stator consist of | electromagnets | ||||
| Electric potiental is measured in | volts |
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Created by:
wloucks08
on 2009-05-05